Top 16 Blockchain Projects on GitHub in 2025

Every day, you interact with technology in ways you might not even realize. When you open your bank app, pay for coffee with your phone, or order groceries online, you are tapping into systems that rely on complex algorithms and secure databases. 

However, behind these digital conveniences lies an innovative technology that is slowly changing the world: blockchain. Blockchain is revolutionizing industries by ensuring data integrity, security, and decentralization. 

Working on GitHub blockchain projects is one of the best ways to dive deep into this transformative technology. 

Engaging with these projects allows you to grasp concepts that are shaping the future. This article explores the top 16 blockchain projects on GitHub in 2025 and how you can hone your skills by contributing to them. So, read on to learn more about blockchain projects!

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Beginner-Level Github Blockchain Projects 

Starting your blockchain journey doesn’t have to be overwhelming. With the right projects, you can build foundational skills that will set you up for success in more complex blockchain developments. 

Open source blockchain projects GitHub provide an excellent starting point, offering both learning opportunities and hands-on experience with real-world applications. 

Here's an introduction to some of the most exciting projects that can kickstart your blockchain development career.

1. Decentralized Voting System

A decentralized voting system allows citizens to vote securely and anonymously, ensuring the integrity of the election process. It leverages blockchain’s tamper-proof properties to make the voting process transparent and auditable.

Project Overview:

Aspect	Details
Brief Working of the Project	Blockchain records votes on a secure ledger, ensuring data integrity.
Tools Used	Ethereum, Solidity, IPFS, Truffle
Skills Gained	Blockchain fundamentals, Smart contract development, DApp creation

Key features of the project:

• Secure voting records
• Anonymized user participation
• Real-time vote tallying
• Blockchain-based transparency

Application: This system can be used for elections, surveys, and decision-making processes in various sectors.

Challenges and how to overcome them:

Challenges	How to overcome them
Ensuring voter anonymity	Use cryptographic methods like zero-knowledge proofs
Preventing vote manipulation	Use blockchain’s immutability to record votes securely
Handling large-scale data in elections	Implement sharding and off-chain storage with IPFS

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2. Blockchain-based Digital Notary

This project focuses on creating a blockchain-based platform for notarizing documents, ensuring that digital documents remain immutable and verifiable.

Project Overview:

Aspect	Details
Brief Working of the Project	Records digital signatures and timestamps on blockchain for verification.
Tools Used	Ethereum, IPFS, Solidity, Web3.js
Skills Gained	Smart contract deployment, Blockchain security, Document management

Key features of the project:

• Immutable digital signatures
• Timestamp-based verification
• Easy document validation
• User-friendly interface

Application: This project is useful for contracts, legal documents, and certifications in various industries like law, real estate, and education.

Challenges and how to overcome them:

Challenges	How to overcome them
Document storage size and cost	Use IPFS for decentralized file storage
Ensuring tamper-proof signatures	Implement advanced cryptographic techniques like hashing in data structure
Lack of user adoption	Focus on a seamless and intuitive user interface

Also Read: Best Ethereum Project Ideas for Beginners 2025

3. Fake Product Identification Using Blockchain

Blockchain networks can help verify the authenticity of products and prevent the sale of counterfeit goods. This project ensures traceability from production to the final customer.

Project Overview:

Aspect	Details
Brief Working of the Project	Tracks product history through every stage using blockchain.
Tools Used	Hyperledger, Smart contracts, Node.js, React
Skills Gained	Blockchain architecture, Supply chain management, Smart contracts

Key features of the project:

• Product traceability
• Verifiable product history
• Secure QR code scanning
• Consumer trust-building

Application: This system can be applied to industries like luxury goods, pharmaceuticals, and electronics to prevent counterfeiting.

Challenges and how to overcome them:

Challenges	How to overcome them
Handling scalability	Use sidechains to handle high transaction volume
Ensuring data accuracy in supply chains	Integrate with IoT devices for real-time updates
Overcoming industry resistance	Educate stakeholders on the value of blockchain technology

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4. Decentralized Blockchain Blog System Project

A decentralized blogging platform gives content creators control over their posts and data, allowing them to bypass centralized platforms. Blockchain ensures transparency and security.

Project Overview:

Aspect	Details
Brief Working of the Project	Hosts blogs on a decentralized platform, ensuring content ownership.
Tools Used	Ethereum, IPFS, Solidity, React, Web3.js
Skills Gained	DApp development, Smart contract creation, Decentralized storage

Key features of the project:

• User-controlled content
• Decentralized data storage
• Immutable content logs
• Secure user authentication

Application: Content creators, journalists, and anyone seeking autonomy over their content can benefit from this project.

Challenges and how to overcome them:

Challenges	How to overcome them
User adoption on decentralized systems	Educate users on privacy and control advantages
Data storage costs on blockchain	Use hybrid storage solutions (off-chain + on-chain)
Slow transaction processing	Optimize smart contract coding for faster execution

Also Read: Step-by-Step Guide to Learn Blockchain Technology

5. Charity Donation Tracking

This project uses blockchain to track charitable donations, ensuring that funds reach their intended recipients and are used appropriately.

Project Overview:

Aspect	Details
Brief Working of the Project	Tracks every donation and its usage, ensuring full transparency.
Tools Used	Ethereum, Solidity, Truffle, IPFS
Skills Gained	Blockchain transparency, Smart contract development, Fund management

Key features of the project:

• Transparent fund tracking
• Donor anonymity
• Secure blockchain transaction records
• Real-time fund usage updates

Application: This can be applied to charities, crowdfunding campaigns, and disaster relief efforts to ensure trust and accountability.

Challenges and how to overcome them:

Challenges	How to overcome them
Managing cross-border donations	Implement multi-currency support through smart contracts
Ensuring donor privacy	Use zero-knowledge proofs to anonymize donations
High transaction fees	Optimize smart contracts and use Layer 2 solutions

6. Supply Chain Transparency

Supply chain transparency helps track the journey of products from origin to destination, ensuring authenticity and fair trade practices. Blockchain makes it easier to verify and monitor every step.

Project Overview:

Aspect	Details
Brief Working of the Project	Monitors and verifies each stage of the supply chain on the blockchain.
Tools Used	Ethereum, Hyperledger, Solidity, Node.js
Skills Gained	Supply chain management, Blockchain integration, Smart contract design

Key features of the project:

• Real-time tracking
• Immutable transaction logs
• Easy product verification
• Enhanced supplier transparency

Application: This system is widely applicable in industries like agriculture, manufacturing, and food safety.

Challenges and how to overcome them:

Challenges	How to overcome them
Complexity of integrating multiple parties	Use consortium blockchains to involve trusted parties
Managing data privacy and security	Implement cryptographic techniques and encryption methods
High operational costs	Use lightweight blockchains or hybrid systems

Intermediate Github Blockchain Projects

As you delve deeper into blockchain technology, you’ll encounter more sophisticated challenges that test both your tech skills. By working on these intermediate GitHub blockchain projects, you will be exposed to topics like tokenization and blockchain integration with other systems. 

Here are some of the most engaging intermediate blockchain projects on GitHub, designed to elevate your skills and boost your portfolio.

7. Blockchain-based Identity Verification

A blockchain-based identity verification system provides a secure, transparent method of verifying personal identities. It eliminates the risk of data breaches or centralized control. 

Project Overview:

Aspect	Details
Brief Working of the Project	Stores identity information on blockchain to ensure transparency and security.
Tools Used	Ethereum, Solidity, IPFS, Web3.js
Skills Gained	Smart contract development, Cryptography, Blockchain integration

Key features of the project:

• Immutable identity records
• Privacy-preserving encryption
• Decentralized verification process
• Real-time access control

Application: This can be used in digital IDs, online authentication systems, and secure login mechanisms for apps and websites.

Challenges and how to overcome them:

Challenges	How to overcome them
Ensuring user privacy	Use zero-knowledge proofs to protect sensitive data
Blockchain scalability	Implement sidechains to handle high transaction volumes
Cross-platform integration	Standardize protocols for interoperability

Also Read: Cryptography in Cybersecurity: Definition, Types & Examples

8. Tokenized Asset Management

Tokenized asset management utilizes blockchain to represent real-world assets like real estate, stocks, or commodities as digital tokens. This system enhances liquidity and simplifies the transfer and ownership of assets by reducing intermediaries.

Project Overview:

Aspect	Details
Brief Working of the Project	Represents real assets as tokens, enabling easy transfer and ownership management.
Tools Used	Ethereum, Solidity, IPFS, Web3.js
Skills Gained	Tokenomics, Smart contract deployment, Decentralized finance (DeFi)

Key features of the project:

• Digital token representation
• Asset liquidity enhancement
• Fractional ownership
• Transparent ownership transfer

Application: This system is ideal for real estate, collectibles, and investment portfolios, enabling faster transactions and reducing fees.

Challenges and how to overcome them:

Challenges	How to overcome them
Regulatory compliance	Keep up with evolving regulations in tokenization
Asset valuation complexities	Use oracles to provide real-time market data
Token security concerns	Implement multi-signature wallets and advanced encryption

Also Read: The future of finance – DeFi

9. Money Transaction Security Blockchain Project

A blockchain-based money transaction security project focuses on creating a secure and transparent system for transferring money across borders. By eliminating intermediaries, it minimizes costs and ensures faster, secure transactions.

Project Overview:

Aspect	Details
Brief Working of the Project	Ensures secure peer-to-peer transactions using blockchain technology.
Tools Used	Ethereum, Solidity, IPFS, Web3.js
Skills Gained	Blockchain security, Cryptocurrency, Transaction optimization

Key features of the project:

• Secure, peer-to-peer transactions
• Transparent and traceable payments
• Reduced transaction fees
• Real-time cross-border payments

Application: This can be used in remittances, cross-border payments, and decentralized finance (DeFi) platforms.

Challenges and how to overcome them:

Challenges	How to overcome them
High energy consumption	Use Proof-of-Stake or other energy-efficient consensus mechanisms
Regulatory scrutiny	Ensure compliance with international financial regulations
User adoption	Simplify the user experience and offer educational resources

Also Read: Blockchain Implementation: Comprehensive Guide

10. Crowdfunding Blockchain Project

A blockchain-based crowdfunding platform allows users to raise funds for various projects or causes. It ensures transparency, accountability, and direct fund allocation.

Project Overview:

Aspect	Details
Brief Working of the Project	Allows users to raise funds on a decentralized platform, ensuring transparency in fund usage.
Tools Used	Ethereum, Solidity, Truffle, Web3.js
Skills Gained	Smart contract development, Crowdfunding systems, Blockchain governance

Key features of the project:

• Transparent fund distribution
• Decentralized project management
• Real-time donation tracking
• No intermediaries required

Application: This project can be applied to charity fundraising, startup funding, and social impact projects.

Challenges and how to overcome them:

Challenges	How to overcome them
Preventing fraud and misuse of funds	Use smart contracts with clearly defined goals and milestones
Ensuring project accountability	Implement decentralized governance and voting mechanisms
Attracting backers to the platform	Focus on seamless user experience and trust-building features

11. Bank Smart Contracts Blockchain Project

The bank smart contracts project focuses on automating banking processes, such as loans, credit, and payments, using blockchain technology. 

Project Overview:

Aspect	Details
Brief Working of the Project	Automates banking services using smart contracts, enabling secure and transparent transactions.
Tools Used	Ethereum, Solidity, Truffle, Web3.js
Skills Gained	Smart contract development, Blockchain in finance, Decentralized systems

Key features of the project:

• Automated loan processing
• Secure payment transfers
• Transparent transaction history
• Reduced fraud and errors

Application: This project can be implemented by banks, fintech companies, and lending platforms to automate various financial operations.

Challenges and how to overcome them:

Challenges	How to overcome them
Integration with traditional banking	Develop APIs for seamless interaction with legacy systems
Ensuring privacy in financial transactions	Use advanced encryption methods and private transactions
Regulatory hurdles	Work closely with legal teams to ensure compliance

Also Read: What Makes a Blockchain Network Immutable? Immutability Explained

Advanced Github Blockchain Projects Ideas

At the advanced level, blockchain development becomes a game of complexity, integrating sophisticated algorithms that can revolutionize entire industries. As you advance your knowledge and experience with GitHub blockchain projects, these ideas will push you to expand your skills further.

Here are some of the most challenging yet rewarding advanced blockchain project ideas on GitHub that can take your blockchain skills to the next level.

12. Blockchain and Cryptography Communication System

This project combines blockchain and cryptography to create a secure, decentralized communication system. Here users can send encrypted messages that are recorded on the blockchain for immutable verification.

Project Overview:

Aspect	Details
Brief Working of the Project	Provides secure messaging using blockchain for end-to-end encryption and storage.
Tools Used	Ethereum, IPFS, Solidity, Web3.js, RSA encryption
Skills Gained	Blockchain security, Cryptographic algorithms, Secure communication protocols

Key features of the project:

• End-to-end encryption
• Immutable message logs
• Decentralized architecture
• Blockchain-based verification

Application: This system can be applied in sectors requiring high security, such as military communications, healthcare, and financial transactions.

Challenges and how to overcome them:

Challenges	How to overcome them
Managing large message data on-chain	Use off-chain storage solutions like IPFS
Ensuring real-time communication	Implement Layer 2 solutions for faster transactions
High resource consumption	Optimize cryptographic algorithms for performance

13. Decentralized Energy Marketplace

A decentralized energy marketplace uses blockchain to allow users to buy and sell energy directly.

Project Overview:

Aspect	Details
Brief Working of the Project	Enables peer-to-peer energy trading on a decentralized platform.
Tools Used	Ethereum, Solidity, Smart contracts, IPFS
Skills Gained	Energy trading systems, Smart contract development, Decentralized finance (DeFi)

Key features of the project:

• Peer-to-peer energy trading
• Transparent pricing and billing
• Real-time energy transactions
• Decentralized energy grid management

Application: This project can be applied to renewable energy sectors, helping users trade surplus energy or participate in microgrids.

Challenges and how to overcome them:

Challenges	How to overcome them
Regulatory issues with energy markets	Collaborate with industry regulators for compliance
Managing energy data privacy	Use privacy-preserving techniques like zero-knowledge proofs
Scaling the platform	Implement sidechains to handle large-scale transactions

Also Read: Blockchain Architecture: Blocks, Mining, Transactions & Benefits

14. Land Registry Using Blockchain Technology

This project utilizes blockchain to create a transparent, secure, and immutable land registry system. Here ownership records are stored and verified, reducing fraud and disputes.

Project Overview:

Aspect	Details
Brief Working of the Project	Stores and verifies land ownership records on a blockchain ledger.
Tools Used	Hyperledger Fabric, Ethereum, Solidity, IPFS
Skills Gained	Land registry systems, Blockchain security, Distributed ledger technology

Key features of the project:

• Immutable land records
• Transparent ownership verification
• Reduced fraud and disputes
• Easy transfer of property rights

Application: This system can be applied in real estate, urban planning, and property management, ensuring secure, tamper-proof records.

Challenges and how to overcome them:

Challenges	How to overcome them
Integration with government systems	Develop APIs to connect blockchain with legacy systems
Resistance from stakeholders	Conduct educational campaigns and demos to build trust
Handling complex legal frameworks	Partner with legal experts to ensure regulatory compliance

15. Blockchain-based Insurance Claims

This project involves the creation of a decentralized insurance platform where claims are processed automatically using smart contracts.

Project Overview:

Aspect	Details
Brief Working of the Project	Automates the insurance claims process with smart contracts and blockchain technology.
Tools Used	Ethereum, Solidity, Truffle, IPFS
Skills Gained	Smart contract automation, Decentralized finance, Insurance technology

Key features of the project:

• Automated claim processing
• Transparent claim history
• Real-time claim tracking
• Reduced claim fraud

Application: This project can be applied to any insurance sector — health, auto, or life — streamlining claims and reducing operational costs.

Challenges and how to overcome them:

Challenges	How to overcome them
Fraudulent claims	Use multiple oracles to verify claims data
Integration with existing insurance companies	Work with insurers for standardization and compliance
Ensuring security of sensitive data	Implement strong encryption and access control measures

16. Blockchain Evidence Management System

This project involves building a system to securely manage evidence, particularly for law enforcement agencies. Blockchain guarantees the authenticity, integrity, and transparency of evidence handling.

Project Overview:

Aspect	Details
Brief Working of the Project	Ensures tamper-proof evidence records that are auditable and secure.
Tools Used	Ethereum, Hyperledger, Solidity, IPFS
Skills Gained	Blockchain in law enforcement, Security protocols, Data integrity management

Key features of the project:

• Immutable evidence records
• Timestamped proof of custody
• Transparent and auditable logs
• Decentralized data storage

Application: This can be implemented in law enforcement, courts, and legal firms to maintain evidence integrity.

Challenges and how to overcome them:

Challenges	How to overcome them
Large data volumes	Use off-chain solutions for heavy data storage
Resistance from the legal system	Collaborate with legal bodies to demonstrate benefits
Data privacy and confidentiality	Use encryption and permissioned blockchains for privacy

Top Open Source Blockchain Projects GitHub You Should Explore

Open source blockchain projects GitHub are more than just repositories — they are a gateway to innovation, collaboration, and growth in the blockchain ecosystem. By contributing to or exploring these projects, you will find yourself at the forefront of the next big leap in decentralized technologies. 

Here are some of the top open-source blockchain projects on GitHub that every blockchain enthusiast, developer, and professional should explore.

Project Name	Overview	Key Features	Tools and Tech
MetaMask	A wallet extension for interacting with the Ethereum blockchain.	Blockchain Wallet development dApp integration, Secure key storage	JavaScript, Ethereum, React
Thought Network	A blockchain-based thought exchange network for decentralized knowledge sharing.	Knowledge validation  Reward mechanism Community-driven	Ethereum, Solidity, IPFS
Decentralized Machine Learning	Decentralized platform for machine learning models using blockchain.	ML model sharing Consensus algorithm Privacy-preserving	Ethereum, Solidity, Python
Matrix AI	AI-powered blockchain platform combining AI with blockchain technology.	AI integration Secure data exchange Decentralized apps	Python, Ethereum, Solidity
NeuFund	A blockchain-based platform for equity crowdfunding.	Fundraising automation Investor transparency Tokenized equity	Ethereum, Solidity, Web3.js
OMG Network	Scalable blockchain solution to increase transaction throughput.	Layer 2 scaling High-speed payments Ethereum compatibility	Ethereum, Plasma, Solidity
ARK	A blockchain platform that provides a simple toolkit for developers.	Custom blockchain creation Sidechain technology Modular design	JavaScript, Solidity, Node.js
GNOSIS	A decentralized prediction market platform on Ethereum.	Prediction markets Decentralized finance Smart contracts	Ethereum, Solidity, React
Aragon	A decentralized governance framework on Ethereum.	DAO management Transparent voting Modular governance	Ethereum, Solidity, IPFS
Ocean Protocol	A blockchain-based data exchange protocol for AI services.	Data sharing Privacy-preserving Decentralized marketplace	Ethereum, Solidity, Python
Storj	Decentralized cloud storage platform for secure data sharing.	Distributed storage Encryption Privacy-focused	Node.js, JavaScript, Ethereum
Origin Protocol	Decentralized marketplace for sharing goods and services.	Peer-to-peer transactions Ethereum-based	Ethereum, Solidity, IPFS
Status	A secure messaging app and browser built on Ethereum.	End-to-end encryption  Wallet integration dApp browser	Go, Ethereum, React
Augur	A decentralized prediction market for forecasting future events.	Market creation Consensus-driven predictions Token rewards	Ethereum, Solidity, JavaScript
OpenMinded	A decentralized knowledge-sharing platform built on Ethereum.	Open-source publishing Token rewards Content creators	Ethereum, Solidity, IPFS
Napoleon X	A decentralized investment fund platform powered by blockchain.	Algorithmic trading Smart contract-based investments	Ethereum, Solidity, Python
Erasure	A platform that allows users to sell data and insights securely.	Data monetization Decentralized exchange Cryptographic guarantees	Ethereum, Solidity, IPFS
Numerai	A hedge fund powered by machine learning predictions.	Data scientists' collaboration Encrypted data Staking model	Python, Ethereum, NumPy
Namahe	Decentralized platform for tokenizing real estate assets.	Tokenized ownership  Fractional investment Blockchain integration	Ethereum, Solidity, React
Santiment	A data-driven blockchain project focused on providing actionable crypto insights.	Market analysis Blockchain analytics Data insights	Python, Ethereum, JavaScript

Each of these open source blockchain projects GitHub is a unique journey into a different domain within blockchain technology. They span industries such as finance, real estate, cloud storage, AI, and decentralized governance. 

This proves that blockchain is not just about cryptocurrency but can be the foundation for an entirely new digital ecosystem.

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Best Practices for Choosing Open Source Blockchain Projects

Selecting the right blockchain project is crucial for your growth and development as a blockchain developer. Here are a few best practices for selecting open source blockchain projects GitHub that suit your skill level and career goals.

• Assess Your Skill Level: Choose projects that match your current expertise. Starting with a project like a simple cryptocurrency wallet will help you grasp basic concepts before tackling complex decentralized applications (dApps).
• Focus on Scalability: Opt for projects that have the potential to scale. A project like MetaMask offers a great starting point for learning scalability concepts without overwhelming you.
• Real-World Applications Matter: Work on projects that solve real-world problems. For example, Storj addresses decentralized cloud storage — something that can be implemented today.
• Start Small: Begin with smaller projects before moving on to larger ones. A project like Erasure (data sales on the blockchain) is manageable but impactful.
• Source Code Availability: Always ensure that the project's source code is accessible. Open-source GitHub blockchain projects like Aragon give you insight into effective project structuring and techniques.

Common Challenges in Blockchain Projects

Blockchain development can be incredibly rewarding, but it comes with its own set of unique challenges. Here are some common challenges in open-source blockchain projects on GitHub and how to overcome them.

• Complexity of Consensus Mechanisms: Understanding algorithms like Proof of Work or Proof of Stake can be difficult. Start with simpler consensus algorithms to grasp the basics.
• Scalability Issues: Many blockchain systems struggle with scaling efficiently. Projects like OMG Network focus on solving this issue with Layer 2 solutions.
• Security Concerns: Blockchain applications, especially those dealing with cryptocurrencies or sensitive data, face constant threats. Focus on learning cryptographic techniques and using tools like Truffle to test your code.
• Interoperability with Legacy Systems: Integrating blockchain with traditional systems can be tricky. Seek out projects like Origin Protocol, which demonstrate how blockchain can be integrated with existing e-commerce platforms.

Also Read: Confidentiality, Integrity & Availability (CIA Triad) in Cyber Security: What is this, Why does it m

How Can upGrad Help You?

In the fast-evolving world of blockchain technology, staying ahead of the curve is essential. With upGrad’s tailored courses, you can easily deepen your understanding of key concepts and sharpen your skills, enabling you to tackle more complex projects in no time.

Here are some free courses offered by upGrad that can help you build a strong foundation in blockchain and related technologies.

Course Name	Key Features
Introduction to Cryptocurrency	Understand the basics of blockchain and get an overview of cryptocurrencies.
Data Structures and Algorithms	Learn the essential data structures and algorithms, key for solving blockchain problems efficiently.
Fundamentals of Cybersecurity	Learn principles of cybersecurity threats, covering encryption and secure communication vital for blockchain.

Beyond these free offerings, upGrad also provides tailored career counseling sessions and access to offline centres. You’ll get advice from experts who understand the latest trends and can direct you to the right opportunities.

Project Source Code:

1. Decentralized Voting System
2. Blockchain-based Digital Notary
3. Fake Product Identification Using Blockchain
4. Decentralized Blockchain Blog System Project
5. Charity Donation Tracking
6. Supply Chain Transparency
7. Blockchain-based Identity Verification
8. Tokenized Asset Management
9. Money Transaction Security Blockchain Project
10. Crowdfunding Blockchain Project
11. Bank Smart Contracts Blockchain Project
12. Blockchain and Cryptography Communication System
13. Decentralized Energy Marketplace
14. Land Registry Using Blockchain Technology
15. Blockchain-based Insurance Claims
16. Blockchain Evidence Management System